Nut-lock.



P. D. HOLDEN.

NUT LOCK.

APPLlcAloN FILED FEB. 11, 1915.

l ,l 84,6%?, Patented May 23, 1916.

2 SHEETS-SHEET l.

P. D. HOLDEN.

NUT LOCK.

APPLICATION FILED fm1?. Isls.

Patented May 23,1916.

2 SHEETS-SHEET 2.

lIPLEIQFJIIR'. D. HOLDEN, OF ROXBOROUG-H, PENNSYLVANIA;

NUT-LOCK.

iaeaeae.

Specification of Letters Patent.

ratentea May as, raie.

Application filed February 17, 1915. Serial No. 8,820.

ments in means for locking a nut upon a bolt,

and the object of the invention is to provide a device of this character which is sim-v ple in construction, cheap to manufacture and which will perform its function with ease and accuracy.

With the above and other objects in view, the improvement resides in the construction, combination and arrangement of parts set forth in the following specification and falling within the scope of the appended claim.

In the drawings: Figure l is a sectional view illustrating the application of my improvement, Fig. 2 is an end view of the same, Fig. 3 is a sectional view approximately on the line 3 3 of Fig. 2, Fig. 4 is a view similar to that illustrated in Fig. 2 but showing the application of the locking elements before the nut or bolt is turned to bring the locking member into engaging position, Fig. 5 is a detail perspective view of the bolt, Fig. 6 is a similar View of the nut, Fig. 7 is a similar view of the locking member', Fig. 8 is an elevation, partly in section, illustrating a modification, and Fig. 9 is a side view of a device as disclosed in Fig. 8.

Referring now to the drawings in detail, 1-1 designate two plates which are adapted to be connected by a bolt 2 and a nut 3.

The bolt 2 is of the ordinary construction, except that the end of its shank, opposite that of its head is provided with a square or rectangular portion 4, and the corners of said portion 4 are threaded, as at 5.

The numeral 6 designates a washer which is adapted to be arranged upon one of the plates l between the said plate and the nut. The nut 3 has its outer face formed adjacent two of its opposite edges with longitudinally extending lugs 6-6 wllh are arranged in parallelism and which preferably have their inner faces depressed to provide angular walls 7.

The numeral 8 designates what I term the locking element for the device, the same comprising a substantially rectangular or square plate having two of its opposite edges beveled, as at 9--9, and the said beveled edges are adapted to be received within the recess or beveled edges provided by the members 6-6 of the nut 3.

It is to be understood that the member 8 is of a less width, between its beveled edges, than that of the face of the nut between its projections 6-6, so that when the nut is screwed home upon the bolt, the member 8, which is provided with a reetangular or square bore 10 may be arranged over the extension 4 of the bolt and may have its beveled sides or edges arranged adjacent the beveled sides 7 of the members 6. A retrograde movement of the nut or bolt as illustrated in Fig. 2 will force the sides 9 of the member 8, the bore 10 of which snugly engages with the extension 4 of the said bolt, so that the said beveled edges 9 will contact with the beveled walls provided by the members 6', and so prevent a retrograde or unscrewing movement of the nut or bolt.

ln Figs. 8 and 9 the locking member 10 is provided at its diametrically opposite corners with shoulders 12-12 which are adapted to be received within angular depressions or pockets 13-13 formed in enlarged or thickened portions 14-14 upon the diametrically opposite corners of the nut 15, the bolt 16 being provided with a rectangular opening 17 to receive the rec tangular bore 18 of the member 10.

Having thus described the invention, what I claim is:

The herein described construction of means for locking a nut upon a bolt including a bolt having its shank provided with a rectangular extension, the corners of which are threaded, a nut for the bolt, said nut having its outer face in a line with two of its sides formed with projections, the innerl adjacent, walls of which being angular to provide pockets, a rectangular plate having two of its opposite edges beveled and of a turned upon the bolt in an unscrewng disize to be received between the projections rection. 10 of the nut, said plate having a rectangular In testimony whereof I afx my signature opening to ,receive the rectangnlarrv eXtenin presence of two witnesses.

sion of the bolt and adapted to be arran'ged PETER D. HOLDEN. against the outer face of the nut and to Witnesses:

have its beveled edges partly received' in4 the J oHN E; JONES,

pocketsV of the projections when the nut is CHARLES J. RUMSEY.

Copies of this patent may be obtained for iive cents each, by addressing the Commissioner of Patente. 

